paper

The J/ψProduction Associated with a Hard Photon and the Color-Octet Singnature in e^+e^- Annihilation

arXiv:hep-ph/9704364 · doi:10.1103/PhysRevD.56.R1363

Abstract

J/ψproduction associated with a hard photon in e^+e^- annihilation, being of QED nature, is invastigated thoroughly in the paper. To show its influence on the observation of the color-octet singnature in the e^+e^- annihilation via J/ψinclusive production, the cross sections of the J/ψproductions through different mechanisms at various energies are compared quantatively by presenting them in figures together. The contribution from the production associated with a hard photon to the inclusive production of J/ψis pointed out to be significant at the concerned energies, thus the influence from it on the observation of the color-octet signature should be dealt with carefully.

12 pages, RevTex, 5 postscript figures. Discussion and English slightly modified, Version to appear in Phys. Rev. D

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